Feed-water heater



(No Model.)

B. REYNOLDS.. Feed-Wa;13er .Heate'r.

.Pfakelvlfed May 25i |880.

VIA-rg..

pm 2 9, 7 A 2 2f m N Fig.

Inventor. Q@ '.Q

N.|P|'ERS, FMDTKLLITHOGRPHER, WASHINGTON, D, C.

centric heating-coils,

UNITED 'STATES SPECIFICATION forming To all whom @t may concern:

Be it known that I, EDWIN REYNOLDS, of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Feed-Water Heaters, of which the following is a specification.

My invention is in the nature of an improvement upon a certain feed-waterheater for which I have filed an application for Letters Patent; and it has for its object the more thorough heating of the feed-water after it has been purified, in the manner clearly set forth in my former application.

In my former specification I described a feed-water heater containing a single heatingcoil, through which the feed-water'was passed either from above downward or from below upward, accordingly as the water contained more or less impurities in solution. Thus when the water contained considerable impurities in solution I passed the water from above downward, and when the water cona slight amount of impurities in passed 1t through the coil from tained only solution l then below upward.

Having discovered that the best purifying effect was had by passing the feed-water from above downward through the coil, and that the best heating effect was had by passing the feed-water from below upward through the coil, I have made such changes in the construction and arrangement of the heater as will enable me to obtain the best purifying effect and the best heating effect at one and the same time.

Myinvention consists in providing two conplaced in the annular space through which the exhaust-steam circulates in the heater, through one of which coils the feed-water is passed from above downward for the best purifying effect, and through-the other of which coils the water, after purification has taken place, is passed from below upward to obtain the best heating effect, as will be fully described hereinafter.

'In the accompanying drawings, Figure 1 is a sectional elevation ,of my improved feedwater heater; and Fig. 2 is a sectional plan, showing the position of the two heating-coils.

Similar letters of reference indicate similar parts.

PATENT Ori-Ica EDWIN REYNOLDS, OF MILWAUKEE, WISCONSIN.

vHaan-WATER HEATER.

part of Letters Patent No. 227,925, dated May 25, 1880. Application filed April 13, 1880. (No model.)

A is the base-casting of the heater, containing the settling-chamber A. B is the outer shell, and O the inner shell, between which is an annular space containing the coils G and H. D is the filter-chamber. E is the cold feedwater connection, through which the water is passed to the coil G. Eis a down-pipe, the upper end of which debouches in the filterchamber D, and the lower end of which is connected to the coil H. I is theinud-wellat the base of the heater, and t' is a blow-out pipe. e is a steam-connection for blowing out the coil G, and h is the feed-water connection to the boiler.

The exhaust-steam enters the heater at the opening J, and leaves the heater at the opening K, after circulating through the annular space between the shells B and C.

The operation of the heater is as follows: The cold feed-water enters the upper end of the coil y G through theJ connection E, and, passing downward, leaves the coil through the elbow e. The water, in passing downward through the coil G, is thoroughly heated by the exhaust-steam circulating through the annular space between the shells B and O. When the water leaves the outlet e of the coil G it passes into the settling-chamber A', where a rapid deposition of the matter held in solution by the water, and separable only by the application of heat, takes place. The water thus relieved of the impurities in solution rises into the central chamber surrounded bythe shell O, and finally passes through the perforations in the bottom andsides of the filter-chamber D. The filter-chamber, being provided with the usual lteringmaterials, such as hay, straw, or shavings, intercepts all impurities held in suspension by the water; and the water, thus relieved of its salts and organic matter, passes upward in the lter-chamber through the perforated diaphragm or plate d; From the space in the upper part of thefilter-chamber the water passes down thepipe F and into the lower end of the coil Il, at the bottom of the annular space between the shells B and G. The water then passes upward through the coil H, and leaves the heater in a highly-heated and puri- Ico water, in passing downward through this coil, is heated nearly to the temperature of the steam surrounding' it, and the precipitation of the matter held insolution by the water quickly occurs after circulation has ceased. Directly the water leaves the heated coil and enters the cooler settling-chamber the circulation ceases. The water, in passing successively through the settling-chamber, the central chamber, and the lterchamber, parts with considerable of its heat, which heat is restored, by means of the coil H, before the feed-water leaves the heater, to the boiler.

The coil Gis used to heat the water as it enters the heater and produce a rapid and complete precipitation of the matter held in solution, and the coil H is used to bring the purified water to the highest possible temperature before'it leaves the heater.

I am aware that a doublecoil feed-water pipe has been arranged in the smoke-chamber of a locomotive, but these coils were .both arranged to carr r the water upward; and I do not claim such invention. It does not involve the novel principle of carrying the water upward for heating and downward for purification, as in my apparatus.

Having described my invention, what l claim. is-

l. In a feed-water heater for utilizing the heat in the exhaust-steam from an engine, the combination, with an annular steam-chamber arranged for connection with the exhaust-pipe of a steam-engine and provided with a steamednction port, of the heating-coils G and H. for the purpose and substantially as described.

2. In a feed-water heater for utilizing the heat in the exhaust-steam from an engine, the combination, with the annular steam-chamber and settling-chamber, constructed essentially as set forth, of a coil, G, through which the water is rst passed downward, and a coil, H, through which the purified feed-Water is iinally passed upward, for the purpose and substantially as described.

3. In feed-water heaters for utilizing the heat in the exhaust-steam from an engine, the. combination ot' the coils G and H with the settling-chamber A for the purpose and substantially as described.

In testimony whereofI have signed my name to the tbregoingspeciication in the presence of two subscribing witnesses.

EDWIN REYNOLDS.

Witnesses WILLIAM S. CHASE, WM. W. ALLIs.

and the tlter-chamber D, 

